whiteSpace=replace facet with textarea - all whitespaces become spaces, good for single line fields

Replace *Required string field with ctrl.emptyisnull=true and whiteSpace=replace facet, whitespace is replaced with spaces, whitespace only values are converted to the {absent} (null) value because of emptyisnull=true.

Replace Empty Is Null False *Required string field with ctrl.emptyisnull=true and whiteSpace=replace facet, whitespace is replaced with spaces, whitespace only values are kept because of emptyisnull=false.